Ultrasonic manometry process in a fluid by means of microbubbles
Patent 5195520 Issued on March 23, 1993. Estimated Expiration Date: 
December 12, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 12, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethod of determining pressure within liquid containing vessel Carrier liquid solutions for the production of gas microbubbles, preparation thereof, and use thereof as contrast medium for ultrasonic diagnostics Method of production and use of microbubble precursors Patent #: 4681119 InventorsAssigneeApplicationNo. 806794 filed on 12/12/1991US Classes:600/438, Used as an indicator of another parameter (e.g., temperature, pressure, viscosity)424/9.52, Stable gas bubbles containing or intentional solubilized gas containing600/458Contrast enhancementExaminersPrimary: Jaworski, Francis J.Attorney, Agent or FirmInternational ClassA61B 008/00Foreign Application Priority Data1986-11-05 DEAbstractThe invention relates to an ultrasonic manometry process in a fluid containing stabilized micro bubbles in an ensemble, wherein ultrasonic impulses are radiated into the fluid and brought to interact with the micro bubbles. The amplitude and/or frequency alterations in the ultrasonic scatter signals are recorded and evaluated compared with the ultrasonic impulses radiated in and/or previously recieved. Preparations for measuring blood pressure which can be used with the manometry process are described.Other References
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